The aufs module for the Linux kernel 3.x and 4.x does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.
[ { "events": [ { "introduced": "3.0.0" }, { "last_affected": "3.19.8" } ] }, { "events": [ { "introduced": "4.0.0" }, { "last_affected": "4.20.15" } ] } ]
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-2854.json"